參數(shù)資料
型號: AD7873BCP
廠商: ANALOG DEVICES INC
元件分類: 消費家電
英文描述: Touch Screen Digitizer
中文描述: SPECIALTY CONSUMER CIRCUIT, QCC16
封裝: 4 X 4 MM, MO-220VGGC, LFCSP-16
文件頁數(shù): 3/28頁
文件大?。?/td> 657K
代理商: AD7873BCP
AD7873
SPECIFICATIONS
V
CC
= 2.7 V to 3.6 V, V
REF
= 2.5 V internal or external, f
DCLK
= 2 MHz; T
A
=
40°C to +85°C, unless otherwise noted.
Table 1.
Parameter
AD7873A
1
AD7873B
1
DC ACCURACY
Resolution
12
12
No Missing Codes
11
12
Integral Nonlinearity
2
±2
± 1
Differential Nonlinearity
2
–0.9/+1.5
Offset Error
2
±6
±6
Gain Error
2
±4
±4
Noise
70
70
Power Supply Rejection
70
70
SWITCH DRIVERS
On Resistance
2
Y+, X+
5
5
Y–, X–
6
6
ANALOG INPUT
Input Voltage Ranges
0 to V
REF
0 to V
REF
DC Leakage Current
±0.1
±0.1
Input Capacitance
37
37
REFERENCE INPUT/OUTPUT
Internal Reference Voltage
2.45/2.55
2.45/2.55
Internal Reference Tempco
± 15
± 15
V
REF
Input Voltage Range
1/V
CC
1/V
CC
DC Leakage Current
±1
± 1
V
REF
Input Impedance
1
1
Rev. D | Page 3 of 28
Unit
Bits
Bits min
LSB max
LSB max
LSB max
LSB max
μV rms typ
dB typ
typ
typ
Volts
μA typ
pF typ
V min/max
ppm/°C typ
V min/max
μA max
G typ
Test Conditions/Comments
+V
CC
= 2.7 V
External reference
CS = GND or +V
CC
; typically 260 when on-
board reference enabled
Sampling; 1 G when battery monitor off
External reference
Internal reference
Typically 10 nA, V
IN
= 0 V or +V
CC
TEMPERATURE MEASUREMENT
Temperature Range
Resolution
Differential Method
3
Single Conversion Method
4
Accuracy
Differential Method
3
Single Conversion Method
4
BATTERY MONITOR
Input Voltage Range
Input Impedance
Accuracy
LOGIC INPUTS
Input High Voltage, V
INH
Input Low Voltage, V
INL
Input Current, I
IN
Input Capacitance, C
IN5
Footnotes on next page.
–40/+85
1.6
0.3
±2
±2
0/6
10
± 2.5
± 3
2.4
0.4
±1
10
–40/+85
1.6
0.3
±2
±2
0/6
10
± 2
± 3
2.4
0.4
±1
10
°C min/max
°C typ
°C typ
°C typ
°C typ
V min/max
k typ
% max
% max
V min
V max
μA max
pF max
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